Home / 12,878,888.40-19,327,189.86-5,305,854.15

Finding the Fourth Proportional to 12,878,888.40, 19,327,189.86 and 5,305,854.15

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Solution

The fourth proportional to 12,878,888.40, 19,327,189.86 and 5,305,854.15 is: 7,962,430.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,878,888.40 : 19,327,189.86 = 5,305,854.15 : x
  2. Step 2: Convert to fraction form
    12,878,888.40/19,327,189.86 = 5,305,854.15/x
  3. Step 3: Cross multiply
    12,878,888.40x = 19,327,189.86 × 5,305,854.15
  4. Step 4: Simplify right side
    12,878,888.40x = 102,547,250,526,518.92
  5. Step 5: Solve for x
    x = 102,547,250,526,518.92/12,878,888.40
  6. Step 6: Final answer
    x = 7,962,430.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.